Drive mechanism.



a. JENSEN. DRIVE MECHANISM.

APPLICATION FILED NOV 27,1900.

Patented Aug; 10, 1909.

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G. JENSEN. DRIVE MECHANISM.

APPLICATION FILED 110V. 27, 1908. I 930,861. Patented Aug. 10, 1909.

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By 6 F 02 A TTOR/VE V5.

G. JENSEN.

DRIVE MECHANISM.

APPLICATION FILED NOV. 27, 1903.

930,861. I Patented Aug. 10, 1909.

4 SHEETS-SHEET 3.

WITNESSES: l/WE/VTUR Jaw/WM psi-Law Join-sew.

G. JENSEN.

DRIVE MECHANISM. APPLIOAIION IILED NOV.27,1908.

930,861. Patented Aug. 10,1909.

4 SHEETS-SHEET 4.

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ANDREW. M. GRAHAM 00.. PHDTO-U HOEMPNERS. wAsMmemN, m c.

I CHRISTIAN JENSEN, or PALMYRAI, NEw JERSEY.

DRIVE" MECHANISM.

Specification of Letters Patent.

Patented Aug. 10, 1909.

Application filed November 27, 1908. Serial N0. 464,582.

T all whom it may concern:

Be it known that I, CHRISTIAN JENsEN, residing at'Palmyra, in the county of Burlington and State of New Jersey, have invented certain new and useful Improvements in Drive Mechanisms, of which the following is a specification. f

My invention is a means for driving the rotary cylinders of washing machines of the type disclosed in my copending application filed December 18, 1907, Ser. No. 405,948. In washing machines of the type disclosed a predetermined number of revolutions first in one direction and then the other, thus making it desirable to have some positively operated power transmission mechanism whereby ower may be taken from a unidirectiona lyrotatable driving shaft set in motion by a uni-directionally moving belt or other transmission device, and means whereby such power can be applied to oper-' ate the cylinder and cause it to rotate a pre determined number of times first .in one direction and then a corresponding number of times in an opposite direction.

My present invention therefore primarily has for its object to provide a drive mechanism for the cylinder operated from .a main power shaft (not shown) by an endless belt that moves in one direction only, and to provide means for automatically shifting the operative connection between said beltand the cylinder shaft so that without changing the direction of movement of the belt the cylinder shaft after being revolved in one di rection a given number of revolutions; will be automatically reversed and revolved a corresponding number of revolutions in the opposite direction. I accomplish the fore going result by providing a driving shaft geared directly to the cylinder shaft and. carrying a main belt pulley; a second pulley is rotatable on the driving shaft; which sec- 2 0nd pulley isindirectly geared to the cylinder shaft through an idler pinion; a loose pulley is providedon the driving shaft between the other two pulleys and the endless drive belt passes around a pulley on the main power shaftand around one oranother of the three pulleys on the driving shaft; A belt shifter is provided to. shift the belt from one pulley to the other, as desired, and

automatic means are provided to cooperate with the belt shifterto cause itto shift the belt at predetermined times so that after the belt has ruri'on one pulley to revolve the cylinder inone direction a g1ven-nu1nber of revolutions, it will be automatically shifted to another pulley to reverse the direction of movement of the cylinder an equivalent number of revolutions.

Another object of my invention is to provide a drive mechanism of the foregoing char'acterof a very simple construction that can be manufactured at a minimum expense andwhich will readily and effectively accomplish its desired urpose. in such application the cylinder is revolved Inits more speci 0 nature my invention also embodies those novel details of construction, combination and arrangement of parts, all of which will befirst described in detail and then be specifically pointed out in the appended claims, reference being had to the accompanying drawings, in which Figure 1, is a perspective view showing my invention in use, the parts being in the position they assume while the cylinder is being revolved in one direction and is just about to be reversed. Fig. 2 is a similar view, the parts being in the position they assume when the cylinder is turning in an opposite direction and just about to be reversed. Fig. 3, is a similar view thereversing mechanism being in a mid-position with the belt on the loose pulley. Fig. 4, is a side elevation and. part section of my invention. Fig. 5, is a top plan view. Fig. 6, is a perspective view of the oscillating bar and its rocking wedge carrying arms. Figs. 7, 8 and 9, are detail views of modifications of my invention hereinafter specifically referred to.

The cylinder 2 has a shaft 2 which constitutes the driven shaft that is mounted in hearings in the end walls of the casing 1. A master gear 3 and pinion 4 are keyed on the projecting end of the shaft 2 to turn therewith;

In suitable bearings'5 of a frame 5 that is secured'to the casing head 1 is a driving shaft 6 to which-a pulley 6 is secured, so that the pulley 6 and shaft 6 will turn together. A pinion 6 is keyed to the shaft 6 to mesh directly with the master gear 3 on the cylinder or driven shaft 2, so that, as motion is imparted to the shaft 6, in a given direction, its motion isdirectly transmitted to the cylinder shaft to turn the cylinder in one direction. A second pulley 7 having a hub 7 is mounted loosely on the shaft 6 and the second pulley 7 carries a gear 7' that meshes with the idler pinion 8 on a stub shaft 8, which is secured at 8 to the cylinder head 1 as clearly shown in Fig. 4. The pinion 8 also meshes with the master gear 3 on the cylinder shaft 2*, so that as the pulley 7 is turned in a given direction, its motion will be indirectly imparted to the cylinder shaft to cause the cylinder shaft to turn in the same direction as the pulley 7 a when power is applied to turn the pulley [7 in such given direction. Disposed between the pulleys 6*7 on the shaft 6, is a loose pulley 9, the three pulleys lying close together so that an endless driving belt 10 may be readily shifted from one pulley. to another. A uni-directionally movable driving belt 10 passes around the pulleys 6 7 and 9 and around a pulley on a power shaft, (not shown).

From the foregoing it will be seen that While the belt is on the pulley 6, the cylinder will be turned in one direction and while the belt 10 is on the pulley 7*, an opposite rota- 11 to straddle the belt 10.

tion will be imparted to the cylinder. When the belt 10 is on the pulley 9, no motion is applied to the cylinder.

In order to insure the proper reversal of the cylinder after a. predetermined number of revolutions in one direction or another, I

have devised an automatically controlled and actuated belt shifting mechanism controlled from the cylinder shaft whereby after the cylinder is moved a certain definite number of revolutions in one direction, it is automatically reversed and caused to make the same number of revolutions in the opposite direction. I may accomplish the result by providing a belt shifter 11 forked at The shifter 11 is a bar that is adjustably fastened to a vertical rock shaft 11 that is mounted in bearings in brackets 11 that project from the head 1 of the casing 1 so that the shifter 11 may have a rocking or pivotal movement. A bar 20 is also secured to the vertical roc'k shaft 11 for a purpose presently to appear.

Pivoted on a stud 12 that projects from 4 y the casing head 1 is an oscillatable lever 12 that carries a weight 12' (preferably adjustable) to move the bar from its perpendicular position to its limit of movement at one side of its perpendicular, or the other, as the case may be. The bar 12 has arms 12 that carry wedges at their extremities to engage the shifting bar 20; one wedge engages said bar at one side of its pivot, so that when the bar 12 isin one position, one wedge 12 will have moved the belt shifter in one direction, while when the bar 12 is in an opposite position the other wedge 12 will move the belt shifter 11 into another position, and when the bar 12 is vertically disposed then the belt shifter will be held in a central position to leave the belt 10 on the loose pulley 9.

In order that the oscillating bar 12 may be moved from a position at one limit of its movement, to that at the opposite limit of its movement, I provide means actuated from the cylinder shaft 2 to move the said bar 12 to a point beyond its vertical or dead center position to allow the weight 12" to move the bar 12 the remaining distance This result is accomplished by providing a gear 13 on a stub shaft 13 to mesh with the pinion 4 on the cylinder shaft. The gear 13 has one or more trip pins 13 13" to engage the bottom end 12 of the bar 12, at predetermined times to move the bar from one position to another.

Operation: Assume the belt to be travel ing always in one direction, say the direction of the arrow A, in Fig. 1, of the drawings, andv the parts to be in the position shownin Fig. 1. The cylinder is rotating in the direction of the arrowB in Fig. 1, and has just about completed the required number of revolutions in such. direction. The belt is now on the pulley 6 and the direct drive from the driving shaft 6 to the cylinder shaft is in action. The pin 13 is just beginning to engage the bar 12 to move it from the position shown in Fig. 1, to that shown in Fig. 3. As the bar is moved by the pin 13", the free wedge 12 in v Fig. 1, engages the shifting bar 20 to work the shaft 1 1 and the shifting bar 1.1. to move the belt from the pulley 6 toward the pulleys 9 and 7 respectively, the belt running on the pulley 9 by the time the midposition of the bar 12 (see Fig. 3) is reached. As soon as the bar 12 passes the mid-position, shown in Fig. 3, and drops to the position shown in Fig. 2, the belt will be on the pulley 7. As soon as the belt 10 gets on the pulley 7 a the indirect drive from the driving shaft to the cylinder shaft is brought into play, and the rotation of the cylinder shaft is reversed. The cylinder shaft then. turns in the direction of the arrow 1) in Fig. 2. The reversal of the cylinder shaft 2 causes a reversal of the gear 13 which, as soon as the shaft 2 has run its required. number of revolutions in the reversed direction, will have turned back to the position shown in Fig. 2, so that the pin 13 will engage thebar 12 and carry it again beyond its mid-position to again move the belt shifter 11 to shift the belt back onto the pulley 5 and cause the cylinder to again turn in its first direction.

The change of rotation takes place at positive, regular intervals during the operation of the machine ad infiaitum. Stops 1-115 may be provided to limit the oscillatory movement of the bar 12. By holding the bar 12 in the position shown in Fig. 3, the machine is brought to rest. The bar 12 may be sustained in a mid-position by a forked latch bar 16, longitudinally movably supteaser lating bar 12 and the rock shaft 11 that is shown in Fig. 7, or with the wedge connection between such parts shown 111 Fig. 1. In the form shown 1n Fig. 8, a crank 22 1s mounted on the rock shaft 11 to turn therewith and the motion of the crank 22 is imparted to a bell crank lever 23 by a rod 23 the bell crank lever having a slotted end 23 to strade dle a pin 23 c on a longitudinally movable rod 24 mounted in bearings 24 m a suitable support 25, the rod 24 having arms 24 provided with fingers 24 to embrace the drive belt. In this form the support 25 and its carried parts is projected betweenthe belt so that adouble engagement with the belt is-had.

In Fig. 9 I-have disclosed a modification of the structure shown in Figs. 7 and 8, wherein a bar 26 has a pivot26 that enters a fork in a lever 27, the lever 27 beingfulcrumed at 27 a on a bracket 29. The lever 27 has a forked end 27 to engage a pin 29 on a rod 29 that carries the belt shiftingarm29 as shown, and is mounted in bearings29, as in dicated.

Various other modifications-will be readily apparent to those skilled in the art to which the invention appertains.

When I speak of direct gear connections between two parts, I mean that a gear on one part meshes directlywith a gear on the other part, or a pulley on one partreceives abelt that passes directly over a pulley on the other part, so thatthe two parts turn in opposite directions, or the equivalent of such structure, and when I'spea-k of indirect gear connections between two parts Imean that a gear on'one part connects with a gear on the other part, not by direct contact but through the medium of othergears to consti-' tute a-train of gears, orthe equivalent thereof.

From the foregoing description, taken in connection with the accompanying drawings, it isthought the complete construction, oporation and numerous advantages of my in* vention will be readily understood by those skilled in the art to which the invention ap pertains, and I desire it understood that slight changes-in the details of construction,

combination and arrangement of parts may" be made'without'departing from the spirit of the invention, or the scope of the appended; claims. v

What-Ielaim is: Y 1. In drive mechanism for rotary cylinder washing machines, a cylinder shaft, a single 'uni directionally movable driving belt, operative connections between the cylinder shaft and the belt whereby the movement of the belt is imparted to the cylinder shaft, means for shifting the belt with relation to the operative connection between the belt and the cylinder shaft to cause the cylinder shaft to rotate first in one direction and then in. the opposite direction, said. shifting means comprising a rock shaft, a belt shifter connected therewith, an oscillatable member,

'operativeconnections between the oscillatablemember and the rock shaft, and means actuated directly from the cylinder shaft for engaging said oscillatable member to oscillate the same.

2. In a drive mechanism for rotary cylinder washing machines, a cylinder shaft, a single uni-directionally movable driving belt, operative connections betweenthe cylinder shaft and the belt whereby the movement of the belt is imparted to the cylindershaft, and means for shifting the belt with relation to the operative connection between the belt and the cylindershaft to cause the cylinder shaft to rotate first in one direction and then in the opposite direction, said shifting means comprising a rock shaft, a belt shifter connected therewith, an oscillata-ble member,

connections between the oscillatable member and the rock shaft, and means actuated directlyfrom the cylinder shaft for engaging said oscillatable member to oscillate the same, said last named means comprising an idler. gear, a pinion'on' the cylinder shaft meshing with the-idler'gear, and means carried by the idlergear for engaging the oscillatable member as the idler gear is rotated by the movement of the cylinder shaft.

3. In a drive mechanism for rotary cylinder washing machines, a cylinder shaft, a driving shaft, loose and fast pulleys on the driving shaft, gear connections between the driving shaft and the cylinder shaft and gear connections between the loose pulley and the cylinder shaft, a uni-directionally movable driving belt cooperating with said pulleys, a belt shifting bar engaging the belt, and oscillatable'meansindependent of the shifting bar for engaging said shifting bar to actuate the same, and means actuated by the cylinder shaft for effecting a part only of the oscillatable movement of said oscillatable means.

4. In a drive mechanism for rotary cylinder washing machines, a driving shaft, a cylindershaft, direct gear connections between the driving shaft and the cylinder shaft, pulleys carried by said driving shaft, a uni-directionally movable driving belt cooperating with saidpulleys, one ofsaid pulleys beingsecured to the driving shaft to turn there with, and another of said pulleys running loose onthe driving shaft, indirect-gear connections between the loosely running pulley and the cylinder shaft, whereby when the belt is on the first pulley a direct drive will 'be imparted to the cylinder shaft to turn in one direction and when the belt is on the other pulley an indirect drive will be imparted to the cylinder shaft to turn in an opposite direction, and an automatic means for shifting the belt from one pulley to the other at intervals, said shifting means comprising a shifting bar to engage the belt, an oscillatable means engaging said shifting bar to actuate the same, means controlled by rotation of the cylinder shaft for effecting a part of the oscillatable movement of said oscillatable means, and a gravity operated means carried by said oscillatable means for completing the oscillation thereof.

5. In a drive mechanism, means, including a rotatable shaft for imoarting motion to an object, a shiftable mem er cooperating with said motion imparting means, an oscillatable bar, connections between said oscillatable bar and said shift able member whereby when the bar is in one position the shiftable memher will cause the motion imparting means to turn the object in one direction and when the bar is in an opposite position will cause the motion impartmg means to effect an opposite rotation of the object, means for oscillating said bar at predetermined intervals, said last named means comprising a rotatable member connected with the rotatable shaft to be rotated thereby, and means carried by said rotatable member for engaging said bar at times.

6. In a drive mechanism for rotary cylinder washing machines, a cylinder shaft, a plurality of driving pulleys, an endless belt passing thereover, direct gear connections between one of said pulleys and the cylinder shaft and indirect gear connections between another of said pulleys and the cylinder shaft, combined with an automatic belt shifter for shifting the belt from one pulley to another at predetermined intervals, said belt shifter comprising a pivoted bar to engage the belt, a weighted oscillatable bar having means for engaging said pivoted bar to rock it on its pivot, and means for moving said oscillatable bar from one position to a point just beyond its dead center to permit the weight to complete the oscillatable movement in a given direction.

7. In a drive mechanism for rotary cylinder washing machines, a cylinder shaft, a plurality of driving pulleys, an endless belt pass ing thereover, direct gear connections be tween one of said pulleys and the cylinder shaft and indirect gear connections between another of said pulleys and the cylinder shaft, combined with an automatic belt shifter for shifting the belt from one pulley to another at predetermined intervals, said belt shifter comprising a pivoted bar to engage the belt, a weighted oscillatable bar having means for engaging said pivoted. bar to rock it on its pivot, and means for engaging said oscillatable bar to effect a portion of its oscillatable movement at predetermined intervals.

8. In a drive mechanism for rotary cylinder washing machines, a cylinder shaft, an endless belt, a set of pulleys around which said belt passes, direct gear connections between one of said pulleys and the cylinder shaft and indirect gear connections between another of said pulleys and the cylinder shaft, a pivoted bar to engage said belt for shifting the same from one pulley to another, an oscillatable bar having arms provided with means to engage said pivoted bar, one of said last named means serving to move the pivoted bar when the oscillatable bar is in one position and another of said means adapted to move the )ivoted bar in an opposite direction when t re oscillatable bar is in an opposite position, and means for effecting an oscillation of said bar.

9. In a drive mechanism for rotary cylinder washing machines, a cylinder shaft, an endless belt, a set of pulleys around which said belt passes, direct gear connections between one of said pulleys and the cylinder shaft and indirect gear connections between another of said pulleys and the cylinder shaft, a pivoted bar to engage said belt for shifting the same from one pulley to another, an oscillatable bar having arms provided with means to engage said pivoted bar, one of said last named means serving to move the pivoted bar when the oscillatable bar is in one position and another of said means adapted to move the pivoted bar in an opposite direction when the oscillatable bar is in an opposite position, mechanical means for effecting a portion of the oscillatable movement of said bar and gravity actuated means for completing said oscillatable movement.

10. In a d rive mechanism for rotary cylinder washing machines, a cylinder shaft, an endless belt, a set of pulleys around which said belt passes, direct gear connections between one of said. pulleys and the cylinder shaft and indirect gear connections between another of said pulleys and the cylinder shaft, a pivoted bar to engage said. belt for shifting the same from one pulley to another, an oscillatable bar having arm provided with means to engage said pivoted. bar, one of said last named means serving to move the pivoted bar when the oscillatable bar is in one position and another of said means adapted to move the pivoted bar in an opposite direction when the oscillatable bar is in an opposite position, mechanical means for effecting a portion of the oscillatable movement of said bar, gravity actuated means for completing said oscillatable movement, and means connecting said mechanical means one of said pulleys and the driven shaft, and indirect gear connections between another of said ulleys and the driven shaft, an oscillatable ar, a fixed pivot for said oscillatable bar a belt shifter, connections between the,

bar and the belt shifter for actuating the belt shifter, and means operated from the driven shaft for imparting a slow movement to said bar during a portion of its oscillation and a rapid motion during another portion of its oscillation.

12. A drive mechanism comprising a driving shaft, a plurality of pulleys mounted thereon, a driving belt for said pulleys, a driven shaft, direct gear connections between one of said pulleys and the driven shaft, and indirect gear connections between another of said pulleys and the driven shaft, an

oscillatable bar, a fixed pivot therefor a belt shifter, connections between the bar and the belt shifter for actuating the belt shifter, and means actuated from the driven shaft for imparting a slow movement to the oscillatable bar during a portion of its oscillation, and other means for rapidly completing the oscillatable movement of said bar.

13. A drive mechanism comprising a driving shaft, a plurality of pulleys mounted thereon, a driving belt for said pulleys, a

driven shaft, direct gear connections between one of said pulleys and the driven shaft, and indirect gear connections between another of said pulleys and the driven shaft, an oscillatable bar, a fixed pivot therefor a belt shifter, connections between the bar and the eys mounted thereon, a driving belt for said pulleys, a driven shaft, direct gear connections between belt shifter for actuating the belt shifter, and means actuated from the driven shaft for imparting a slow movement to the oscillatable bar during aportion of its oscillation, and other means for rapidly completing the oscillatable movement of said bar, said other Ibheans comprising a weight carried by the 14. A drive mechanism comprising a driven shaft, a pulley or driving shaft, driving pulleys mounted on said driving shaft, gearing connecting certain of said pulleys with the driven shaft, a driving belt for said pulleys, a rock shaft, a belt shifter bar adj ustably mounted on, said rock shaft to engage said belt, an oscillatable bar, operative connections between the oscillatable bar and the rock shaft for imparting the movement of the bar to the rock shaft, and means for imparting a slow movement to said oscillatable bar during a portion of its oscillation and a rapid motion to the oscillatable bar during the remainder of its oscillatable movement.

15. A drive mechanism comprising a driven shaft, a pulley or driving shaft, driving pulleys mounted on said driving shaft, gearing connecting certain of said pulleys with the driven shaft, a driving belt for said pulleys, a rock shaft, a belt shifter bar adjustably mounted on said rock shaft to engage said belt, an oscillatable bar, operative connections between the oscillatable bar and the rock shaft for imparting the movement of the bar to the rock shaft, and means for partly moving said oscillatable bar in one direction or the other at a slow speed and other means for completing the movement at a rapid speed.

, CHRISTIAN JENSEN. Witnesses CHARLES LOWE L HOWARD, A. E. DIETERICH. 

